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MECHANICAL SEPARATION
273
Engineering Data on the Classifiers.—Complete data on the performance of these machines is very difficult to obtain. The data given below is the most complete for the installations given that it has been possible to gather. Much of the published and private data which can be obtained is lacking in some important and essential feature and it is not deemed worth while submitting.
UTAH COPPEE COMPANY
54-in. Standard Akins Classifier
Feed:
Tonnage to classifier per 24 hr., 1,050 tons dry.
Per cent of solids................................  37.50
Per cent of moisture............................  62.50
Ratio of water to solids..........................      1%
Products of Classifier:
Sands raised 630 tons per 24 hr., dry.
Per cent of solids................................  60.63
Per cent of moisture.............................  39.37
Ratio of water to solids..........................    0.65
Slimes overflowing 420 tons per 24 hr., dry.
Per cent of solids................................  25.16
Per cent of moisture.............................  74.84
Ratio of water to solids..........................    2.98
Screens									
				TToorl		Sands		QlivYi/aa	
Openings				x1 eeo.				onmes	
Inches	Millimeters	Mesh	Diameter wire, inches	Per cent weight of material	Per cent weight accumulative	Per cent weight of material	Per cent weight accumulative	Per cent weight of material	Per cent weight accumulative
0.263	6.680	3	0.070	0.08	0.08	0.55	0.55		
0.185	4.699	4	0.065	0.06	0.14	0.17	0.72		
0.131	3.327	6	0.036	0.36	0.50	0.70	1.42		
0.093	2.362	8	0.032	0.52	1.02	1.16	2.58		
0.065	1.651	10	0.035	1.19	2.21	2.63	5.21		
0.046	1.168	14	0.025	2.22	4.43	4.62	9.83	0.07	0.07
0.0328	0.838	20	0.0172	5.36	9.79	9.92	19.75	0.33	0.40
0.0232	0.589	28	0.0125	11.13	20.92	20.72	40.47	1.25	1.65
0.0164	0.417	35	0.0122	16.35	37.27	21.40	61.87	7.04	8.69
0.0116	0.295	48	0.0092	9.91	47. 18	10.17	72.04	9.16	17.85
0.0082	0.208	65	0.0072	10.02	57.20	7.81	79.85	9.70	27.55
0.0058	0.147	100	0.0042	6.07	63.27	3.60	83.45	7.94	35.49
0.0041	0. 104	150	0.0026	4.74	68.01	2.52	85.97	7.63	43.12
0.0029	0.094	200	0.0021	3.79	71.80	1.28	87.25	5.23	48.35
		280				0. 63	87.88	2.53	50.88
		through		28.20	100.00	12.12	100.00	49.12	IOC. 00
		280